Since 2007 he has been conducting excavations at the fortified city of Khirbet Qeiyafa. This site is dated to the early 10th century BC, the period of the biblical King David. In the 2008 season an inscription was discovered written in ink on a pottery shard in a script which is probably Early Alphabetic/Proto Phoenician,.[2][3] This might be the earliest Hebrew inscription ever found, although the actual language of the inscription is still under debate.[4][5]